N8n GmbH

An attacker can exploit multiple vulnerabilities in the n8n workflow automation platform to bypass security measures, perform a Denial of Service attack, disclose sensitive information, manipulate files, conduct SQL injection, and execute arbitrary code.

An authenticated user can exploit a format injection vulnerability in the n8n Edit Image node to write arbitrary files outside the node's working directory within the n8n instance, potentially leading to remote code execution or other significant impact.

An authenticated n8n user can exploit a path restriction bypass vulnerability within the Git node's fetch, pull, or push-tags operations to access arbitrary local Git repositories and their contents, potentially leading to sensitive data exposure.

An authenticated n8n user with workflow creation and execution rights can achieve arbitrary code execution on the n8n host by staging a crafted local Git repository within the Git node, causing Git to run malicious hooks as the n8n process user.

A high-severity vulnerability in n8n's embed login feature (CVE-2026-XXXX) allows attackers to achieve full account takeover by leveraging unverified email claims in incoming tokens, enabling authentication as any existing user if the instance has embed login enabled and a trusted key source configured that emits unverified email addresses.

A critical vulnerability, CVE-2026-65595, in n8n's Token Exchange module allows low-privileged users to achieve privilege escalation and potential code execution by exploiting incorrect Public API key scope assignments to JWTs, enabling administrative operations.

The n8n AI Agents module in versions prior to 2.27.4 and between 2.28.0 and 2.28.1 failed to enforce configured 'Allowed HTTP Request Domains' restrictions, allowing an authenticated member-level user with 'use-only' access to a shared credential to bypass these domain restrictions and exfiltrate sensitive secrets to an attacker-controlled server.

An authenticated n8n user with 'use-only editor access' can exploit CVE-2026-59209 in shared workflows when `N8N_EXPRESSION_ENGINE=vm` is enabled, allowing them to read sensitive HTTP Header Auth credentials from the `$request.headers` object within a paginated HTTP Request node's expression and exfiltrate them, bypassing credential domain restrictions.

A security advisory from CCCS highlights an authenticated code execution vulnerability (GHSA-rcv6-pvrj-4xcg) within the n8n Git node, affecting multiple versions prior to 1.123.67, 2.32.1, and 2.31.5, which could allow an authenticated attacker to execute arbitrary code on the host system.

A privilege escalation vulnerability (CVE-2026-65015) exists in n8n's AI Agents feature, allowing users with the read-only Project Viewer role to execute arbitrary tool nodes and access unauthorized credential secrets, potentially leading to arbitrary command execution on the n8n host.

A Time-of-Check to Time-of-Use (TOCTOU) race condition in n8n's Git node allows an authenticated user to achieve remote code execution (RCE) by swapping a directory with a symlink after path validation but before cloning, leading to the loading of a crafted malicious custom node upon server restart.

A DOM-Based Cross-Site Scripting (XSS) vulnerability in n8n allows an attacker to inject scripts into the HTML preview through an unsandboxed iframe srcdoc, enabling the injected script to run with the same origin as the editor; if a victim opens this compromised preview, the script can call authenticated APIs using their session, allowing an account with 'global:member' privileges to exploit this to gain unauthorized access or perform actions.

A stored DOM XSS vulnerability in n8n's Resource Locator feature allows attackers to inject malicious JavaScript into the cachedResultUrl parameter. When a victim opens a specially crafted workflow and interacts with external links, the JavaScript payload executes in their browser, due to a lack of scheme validation for `cachedResultUrl` passed to `window.open()`.

A high-severity DOM-based cross-site scripting (XSS) vulnerability exists in n8n versions prior to 1.123.64, 2.29.8, and 2.30.1, allowing an attacker with global:member privileges to inject malicious JavaScript into an unsandboxed HTML preview, enabling same-origin execution and unauthorized API calls using a victim's session upon preview access.

A Time-of-Check to Time-of-Use (TOCTOU) race condition exists in the Git node's clone operation in n8n versions prior to 1.123.64, 2.29.8, and 2.30.1. This vulnerability allows authenticated users to bypass path restrictions by swapping a validated directory for a symlink, enabling them to plant a crafted repository in the community node directory. Upon the next restart, n8n loads this as a custom node, leading to arbitrary JavaScript execution on the server, affecting both self-hosted and cloud instances.

An authenticated user can exploit CVE-2026-56776, an authorization bypass vulnerability in n8n versions prior to 1.123.55, 2.25.7, and 2.26.2, by sending a POST request to the `/workflows/{workflowId}/test-runs/new` endpoint to trigger unauthorized workflow execution, leading to unintended outbound API calls, data mutations, and other side effects in connected downstream systems.

CVE-2025-71380 is an improper access control vulnerability (CWE-284) in n8n versions up to and including 1.114.4 that allows authenticated users to execute arbitrary commands on the underlying host system where n8n runs, potentially leading to data exfiltration, service disruption, or complete system compromise.

A SQL injection vulnerability (CVE-2026-44792) exists in n8n when using PostgreSQL and the Source Control feature, allowing an attacker with write access to the connected Git repository to inject malicious SQL via a crafted column name in a Data Table JSON file during a Source Control Pull.

CVE-2026-45732 describes a high-severity authorization bypass vulnerability in n8n's OAuth1 and OAuth2 credential reconnect endpoints, where insufficient permission checks allow a user with read-only access to overwrite OAuth tokens, potentially leading to data exfiltration and persistent takeover of shared integrations.

An authenticated user with workflow creation/modification permissions in n8n can achieve remote code execution (RCE) via global prototype pollution in the HTTP Request node due to an unvalidated pagination parameter, as tracked by CVE-2026-44789.

An authenticated user with workflow creation or modification permissions can inject CLI flags into the Git node's Push operation, leading to arbitrary file read on the n8n server; patched in versions 1.123.43, 2.20.7, and 2.22.1, and tracked as CVE-2026-44790.

An authenticated n8n user with workflow creation privileges can bypass a previous patch for XML node prototype pollution, potentially leading to remote code execution on the n8n host when combined with other nodes; patched in versions 1.123.43, 2.20.7, and 2.22.1.

On May 13, 2026, n8n released security advisories addressing vulnerabilities in several products, including prototype pollution and OAuth endpoint issues.